--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/data_generation/transformations/pycaptcha/transformations.py	Fri Feb 26 14:15:38 2010 -0500
@@ -0,0 +1,25 @@
+
+import Numeric, Image
+    #""" Transforme une image PIL en objet numpy.array et vice versa"""
+
+
+def image2array(im):
+    #""" image vers array numpy"""
+    if im.mode not in ("L", "F"):
+        raise ValueError, "can only convert single-layer images"
+    if im.mode == "L":
+        a = Numeric.fromstring(im.tostring(), Numeric.UnsignedInt8)
+    else:
+        a = Numeric.fromstring(im.tostring(), Numeric.Float32)
+    a.shape = im.size[1], im.size[0]
+    return a
+
+def array2image(a):
+    #""" array numpy vers image"""
+    if a.typecode() == Numeric.UnsignedInt8:
+        mode = "L"
+    elif a.typecode() == Numeric.Float32:
+        mode = "F"
+    else:
+        raise ValueError, "unsupported image mode"
+    return Image.fromstring(mode, (a.shape[1], a.shape[0]), a.tostring())